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JD said:" What we care about is the coordinate system. Moe himself
is moving toward the future at the rate of 60 minutes per hour, in
accordance with answer (B), but his coordinate system is not. In
particular the contours of constant time in his coordinate system are
not moving, and those are what we normally use to measure spacetime
positions, velocities, et cetera."
Does this mean that there are continually "new" coordinate systems
that are instantaneous with Moe,
From there it is just a small step to set up coordinate systemsin spacetime ... without the "observer". Just think of it as
I've always thought of Moe actually BEING the coordinate system